Railway-frog



A. A. STROM.

RAILWAY FROG.

(No Model.)

No. 414,126. Patented Oct. 29, 1889.

zkssesn' N PETERS. Hwiwuthop-aphar. Wahington. ILC.

UNITED STATES PATENT OFFICE.

AXEL A. STROH, OF AUSTIN, ASSIGNOR TO THE STROM MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS.

RAl LWAY-FROG.

SPECIFICATION forming part of Letters Patent No. 414,126, dated October 29, 1889.

Application filed August 22, 1889- Serial No. 321,630. (No model.)

To all whom it may concern:

Be it known that I, AXEL A. STROM, a citizen of the United States, residing at Austin, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Railwayl rogs, of which the following is a specification.

My invention relates to an improvement in the class of railway-frogs having the wing and point rails fastened together by means of clamps adjusted to extend transversely across the bases of the frogs.

The object of my invention is to provide improved means for holding the parts of the frog together, and for permitting them to be readily tightened.

Referrieg to the accompanying drawings, Figure 1 is a horizontal section, taken below the heads of the rails, of a railway-frog provided with my improved fastening and tightening means; Fig. 2, a section taken on the line 2 of Fig. 1, viewed in the direction of the arrow and enlarged; Fig. 3, an enlarged perspective view of a key for tightening the parts of the frog together through the medium of a clamp, and showing by dotted lines the manner of securing it against displacement; and Fig. 4, a similar view of the key shown in Fig. 3, illustrating a modification.

A is the frog, comprising the wing-rails B, point-rails 0, intermediate filling D or its equivalent, and my improved means for fastening the parts together and for tightening the fastening means, and thereby also the parts of the frog, should they become loosened.

E and E are clamps, each formed of a metal bar having its end portions turned edgewise of the bar toward each other to produce the hook-shaped extremities r and r which conform at their extremities substantially, at least along their inner edges, to the surfaces of the flanges and webs of aWing-rail at their outer sides. To apply the clamps they are adjusted into their respective positions with the clamp E embracing the frog near its flaring extremity, and the clamp E similarly embracing it near its tapering extremity. The hooked ends r of the clamps should be somewhat shorter than the ends 7' to extend short of and leave spaces between their extremities and the adjacent side of the Web of the wing-rail to admit keys or Wedges F, which may be solid throughout, as represented in Fig. 3, or split toward their tapering extremities, as represented of the key illustrated in Fig. 4.. The keys F are driven or wedged into the spaces provided, as aforesaid, adjacent to the ends of thehook-shaped extremities r of the clamps, thereby effecting tightening together of the parts of the frog and serving, by being driven still farther, in case of loosening of such parts in the use of the frog, to effect tightening thereof. To prevent the possibility of slipping or Withdrawal of the keys when driven into place, the tapering ends, where they extend beyond the clamps, are bent outward, as indicated by dotted lines in Fig. 3 and in Fig. l at the clamp E, and as shown by full lines at the clamp E. If desired, the keys may be split toward their tapering ends, when they could be secured against displacement by bending only the outer portion of the split part of each, as indicated in Fig. 4. It is suflicient for all practical purposes to provide the keys F at one side of the frog only, though of course, if required, they may be provided at both sides.

As will be readily understood from the fore going description, if in the use of the frog the parts become loosened, they may be readily and effectually tightened by driving the keys and thus wedging them between their respective clamps and the adjacent wing-rail, when, since consequent further protrusion of the bent tapering ends of the keys will remove them from contact with the adjacent sides of the ends q of the clamps, they require, to cause them then to serve their purpose, to be further bent.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a railway-frog A, the combination, with the wing-rails B and point-rails O, braced intermediately by filling D or the like, of clamps E and E, each comprising a metal bar having its ends turned edgewise of the bar toward each other and aifording the hookshaped extremities r and r, the said clamps embracing the frog across its base, respectively,near the ends of its wider and narrower 

